Typewriter attachment



March 19, 1935. JENSEN TYPEWRITER ATTACHMENT 4; Shets-Sheet 1 Filed May s, 1953 March 19, 1935. JENSEN TYPEWRITER ATTACHMENT 4 Sheets-Sheet 2 Filed May 5, 1953 March 19, 1935. JENSEN TYPEWRITER ATTACHMENT Filed May 3, 1933 I 4 Sheets-Sheet 3 1 0110120 JAQ 169.. -o1 011012 014 116. v

March 19, 1935. L. JENSEN TYPEWRITER ATTACHMENT 4 Sheets-Sheet 4 Filed May 3, 1935 fiza'erzz ar," 0 1.19726 I" I,

Patented Mar. 19, 1935 UNITED STATES TYPEWRITER ATTACHMENT Louis Jensen, Chicago, 11]., assignor to United Autographic Register 00., a corporation of Illinois Application May 3, 1933, Serial No. 669,258

4 Claims.

This invention relates particularly to, typewriters adapted to the purpose of filling in forms on continuous-form stationery and more particularly to'an attachment for holding carbon 5, strips in interleaved relation with fanfold stationery so'that the carbons maybe shifted from and advanced to a succeeding set of forms at the completion of a writing operation.

The primary object of the present invention isto provide alight and simple attachment which may be used in connection with a standard typewriting machine when continuous billing work iseto be done. By employing the.present invention, if desired an office having but a limited amount of billing work may do the same on one of the ordinary typewriters.

The device is carried entirely by the typewriter carriage and extends upwardly so that it takes scarcely any more space than an ordinary machine. Due to its lightness and compactness, its

inertia does not appreciably slow up the movement of the carriage.

In accordance with the present invention, fanfold stationery is led over the top of the device and carbon strips are supported on blades fastened at one edge of a carriage slidably mounted on the frame of the device. The loaded station- -ery is then introduced between the platen roller and its associated presser device so that it may be advanced to writing position in the usual manner. It will be understood that the carbon holder will move forwardly with the stationery as it is advanced by the platen roller or linespacing mechanism. After a set of forms has been completed the stationery is fed back from under the platen roller and this will permit a spring which is attached to the carbon holder to draw the same to the top of the device. The stationery is then lifted over the platen carriage and by grasping the ends of the strips and drawing them forwardly, the carbon (being yielding- -ly held by the spring) will be stripped into the next succeeding set of forms. The completed set of forms may then be severed as indicated in Fig. 2 along its line of weakening, and the next set of forms may be moved into writing position as explained above.

The invention is illustrated in a preferred embodiment in the accompanying drawings, in which- Fig. 1 is a side elevational view of a machine embodying the invention, the stationery being shown in tearing position; Fig. 2,-a front elevational view of the same; Fig. 3, a front elevational view of the typewriter attachment; Fig.

.type and the finger-rest A comprises an anperspective view of one of the carbon-clamping blades; and Fig. 8, an enlarged broken vertical sectional view taken as indicatedat line 8 of Fig. 2.

In the embodiment illustrated, A designates the main frame of a standard typewriting machine, equipped at its upper front portion with a finger-rest A; B, a shiftable platen carriage equipped with a platen B; and C, a typewriter attachment comprising a frame C equi ed with the adapter brackets C, a shiftable carbon holder C and spring-coil C The typewriter A may be of any conventional .20

gular cross-bar 12, which is fastened to the frontof the machine by means of screws 13.. The-bar is shaped and mounted so as not to interfere with theordinary operation of the machine. As shown. in Fig. 2, this member is provided so that the operator may hold the stationery against the same while severing a completed set of forms.

The shiftable carriage B and its platen B are also of the conventional type.

The typewriter attachment C has an upwardly and rearwardly extending frame C. The lower portion of said frame 14 may be stationary, if desired, and directs the stationery between the platen-roller and its associated presser-device. The upper. portion 15 preferably is curved rearwardly from the plane of the lower portion 14 so that its upper end portion is substantially in the plane of the finger-rest A. It will be understood that by this arrangement the carbonholders will be in the plane of the stationery during the stripping operation and the stationery will shift more easily and with less danger of smudging the form. As shown in Fig. 1, the frame is provided with a cross-bar 16 held in position by screws 16, to which the adapter brackets C" are connected by means of screws 16'.

The adapter brackets, as best shown in Fig. 5, comprise a right member 1'1 and a left member 18. The bars are each provided with a series of spaced holes 19 which are numbered and matched. The brackets are mounted in overlapping relationship and by matching two sets of similarly numbered-holes in each of the members, the brackets may be fitted to various widths of typewriter carriages. As the member 1'? is designed to be on the rearmost side, its toe portion 1'1 having a slot 17 is slightly longer than the corresponding toe portion 18 and slot 18 in the companion member. The toe members are adapted to be clamped in position on the typewriter carriage by means of thumb-screws 20.

The upper portion of the frame 15 is provided with a downwardly extending leg 21 which has a foot portion 21 which is adapted to fit'over and rest upon the paper-guide 22 of the typewriter. The carbon carrier C comprises a narrow cross-bar 23 which is equipped at-its end portions with upwardly extending rigidly mounted pins 24. The pins are provided at' their base portions with spacing collars 24 on which the carbon blades may rest. A pair of rollers 25 are journaled on the cross-bar 23 and are provided with grooves 25 which engage the lateral edge portions of the frame C and permit the carbon carrier to travel longitudinally thereon.

The upper portion 15 of the frame is also provided with'a cross-bar 26 whose end portions are struck upwardly and inwardly to form guide ears 26 for the stationery.

The spring-coil C is attached to the upper "portion of the frame 15 and cross-bar 26 by means of rivets 27. The spring reel is of the ordinary type and is equipped with a thin steel tape 30 which is pivotally attached to the crossbar 23 by means of a screw 30*. A spring, not shown, is provided within the housing of the member C and exerts a constant tension on the tape 30. Thus, it will be understood that the'carbon carrier 23 is constantly urged upwardly on the frame C against a pair of stops 4 31 near the top of the device.

Ordinarily,- fanfold stationery 35 is used in machines of this type so that the sets of forms 36 separated by lines of weakening 3'? will not get out of register. However, if desired, separate strips of stationery may be used. In order to support carbon in fanfold stationery a cantilever support must be provided for the carbon-clamping blade. Referring to Figs. 6 and '7, it will be understood that a thin steel blade 40 may be provided with a thickened end portion 41 provided with perforations 41 which are adapted to slip over the pins 24. A carbon-strip 42 may be looped around the blade'40 and held firmly in position by means of a U-shaped clamping member 43 which is pivoted to the blade at 43. After the carbons have been attached to the blades and the blades inserted within the folds of the stationery the blades may be held on the pins by means of spring-clips 45. As best shown in Fig. 2, these clips are bowed at their central portion and the ends are rounded to fit the pins 24 and frictionally engage the same. It is not necessary to rigidly clamp the blades in position, and preferably the blades are permitted to float between the clips 45 and thecollars 24 The foregoing detailed description has been givenfor clearness of understanding only, and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible, in view of the prior art.

What I regard as new and desire to secure by Letters Patent is:

1. In a machine of the character set forth: a typewriter having a traveling carriage provided with a rotatable platen; an upwardly and rearwardly inclined frame mounted on said carriage, the upper portion of said frame being inclined rearwardly with respect to the lower portion; a finger-rest mounted on the upper front portion of said typewriter and lying substantially in the plane of the upper portion of said frame, said finger-rest being adapted to facilitate the severing of the webs led over the carriage; a carbonholding device mounted to travel on said frame towards and away from said platen; and a spring urging said device upwardly on the frame.

2. Mechanism as specified in claim 1, in which the frame is fastened to the carriage by means of a pair of overlapping adjustable adapterbrackets.

3. In a machine of the character set forth: a typewriter having a traveling carriage provided with a platen; an auxiliary frame mounted on and carried by said carriage; and a carbonholding device mounted to travel on said frame to and from said platen comprising a narrow cross-bar provided at each end with a pair of upwardly extending pins and on its lower side with a pair of grooved rollers adapted to engage the lateral edge portions of said frame, carbon-clamping blades having perforations at their end portions adapted to slip over a pair of said pins, and spring-clips adapted to snap over and frictionally engage a pair of said pins to retain the blades thereon.

4. A machine of the character set forth comprising: a typewriter having a traveling carriage provided with a rotatable platen and associated presser-means; an upwardly and rearwa'rdly inclined guide-frame mounted on and carried by said carriage, said frame being adapted to guide continuous-form stationery led thereover to said platen and presser-means, and the upper portion of said frame being inclined rearwardly so as to lie in a plane above the top of the platen; a'carbon-holding device mounted to travel longitudinally on said frame in the direction of said platen; and a spring urging said device to its uppermost position on said frame.

LOUIS JENSEN. 

